Force

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Across
  1. 3. the work that you do on a machine
  2. 4. when a force is exerted, there is an equal but opposite reaction force
  3. 6. the force that opposes the motion of objects through the air
  4. 7. the type of forces that result in no change of motion
  5. 12. pulley that is attached to something that does not move
  6. 14. calculated by acceleration due to gravity times time (for falling objects)
  7. 15. the force that you apply to a machine
  8. 16. final velocity minus starting velocity divided by the time it takes to change velocity
  9. 19. an inclined plane wrapped around a cylinder
  10. 20. work output divided by work input multiplied by 100
  11. 25. force times distance
  12. 27. the friction between objects that causes them not to move
  13. 28. an increase in velocity
  14. 31. the constant velocity when the force of resistance is equal in magnitude and opposite in direction as the force of gravity
  15. 32. machines that are made of two or more simple machines
  16. 34. the curved path an object follows when it is thrown
  17. 36. forces in opposite directions are ___ to get the net force
  18. 37. class lever where the input force is between the fulcrum and the load
  19. 38. lever where the fulcrum is between the input force and the load
  20. 39. pulley that is attached to the object being moved
  21. 40. when fixed and movable pulleys are used together
  22. 43. the more of this, the harder it is to stop the object or change its direction
  23. 44. if gravity is pulling an object down and there are no other forces acting on it
  24. 47. the unit of force
  25. 49. simple machine consisting of two circular objects of different sizes
  26. 50. a pair of inclined planes that move
  27. 52. a device that makes work easier by changing the size and direction of a force
  28. 53. mass divided by volume
Down
  1. 1. when the weight is greater than the buoyant force
  2. 2. the upward force exerted by fluids
  3. 4. a decrease in velocity (also known as deceleration)
  4. 5. the work done by the machine
  5. 8. a force that opposes motion between two objects that are in contact
  6. 9. force equals mass times acceleration
  7. 10. the friction between moving surfaces
  8. 11. the type of forces needed to change the motion of an object
  9. 13. a push or a pull
  10. 17. output force divided by input force
  11. 18. describes balanced forces acting on objects
  12. 21. the combination of all of the forces on an object
  13. 22. when the weight is equal to the buoyant force
  14. 23. the unit for work
  15. 24. the force of attraction between objects that is due to their masses
  16. 26. the tendency of all objects to resist any change in motion
  17. 29. a straight slanted surface
  18. 30. unbalanced forces that cause circular motion
  19. 33. when an object changes position over time relative to a reference point
  20. 35. the force the machine applies
  21. 39. the measure of inertia
  22. 41. another name for Newton's First Law of Motion
  23. 42. distance divided by time
  24. 45. lever where the load is between the fulcrum and the input force
  25. 46. work divided by time
  26. 48. the unit for power
  27. 49. property that is measured in Newtons
  28. 51. forces in the same direction are ___ to get the net force